Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 6460494 | Compressed air assisted fuel injection system with reflection wave and variable restriction injection port An internal combustion engine having a combustion chamber and a fuel delivery system for delivering fuel into the combustion chamber. The fuel delivery system includes a fuel entry proximate the combustion chamber, a combustion compression wave reflection... | 10/08/2002 |
| 6021748 | Planing boat engine A control arrangement for a planing-type boat having an engine powering a water propulsion device is disclosed. The engine has at least one combustion chamber, an exhaust port leading from the combustion chamber, and an exhaust timing valve cooperable wit... | 02/08/2000 |
| 6019074 | Porting arrangement for two cycle engine A number of embodiments of two cycle crankcase compression internal combustion engines having at least two cylinders in a common bank in side-by-side relationship. Each embodiment incorporates a main Schnurle type scavenging system that includes a pair of... | 02/01/2000 |
| 6016777 | Exhaust valve holder An exhaust valve holder including accommodations for additional sealing and resistance to movement. This includes a groove wide enough for two sealing o-rings, a groove or slot which does not run the circumference of the holder and binds against a tab of ... | 01/25/2000 |
| 5992358 | Scavenge system for two cycle engines A number of embodiments of two cycle crankcase compression internal combustion engines having at least two cylinders in a common bank in side-by-side relationship. Each embodiment incorporates a main Schnurle type scavenging system that includes a pair of... | 11/30/1999 |
| 5950581 | Two-cycle internal combustion engine A two-cycle internal combustion engine includes a control valve disposed within a communicating passage between the combustion chamber and a chamber portion adjacent to the combustion chamber. The control valve is for controlling the opening and closing o... | 09/14/1999 |
| 5911202 | Two-cycle engine A deflector comprising a U-shaped embossed part is provided on the top surface of the loop scavenging type two-cycle engine in such a direction that the opening of the U-shaped boss is on the side of the exhaust port of the cylinder, and a combustion cham... | 06/15/1999 |
| 5546898 | Device for controlling the flow of intake and exhaust gases in an internal combustion engine Disclosed is a device for controlling the flow of intake and exhaust gases in an internal combustion engine, which comprises a cylinder head with a plurality of cylinders each forming combustion chamber for burning air/fuel mixture to produce a mechanical... | 08/20/1996 |
| 5398645 | Combustion chamber for internal combustion engine A combustion chamber for an internal combustion engine is provided which includes a cylinder head body having at least one generally dome-shaped combustion chamber defined by a lower surface of the body and having an intake side and an exhaust side, and a... | 03/21/1995 |
| 5398646 | Exhaust arrangement for a 2-cycle engine An exhaust port is formed in the wall of a cylinder of a 2-cycle engine. At least one of the portions of the cylinder wall which define two vertically opposing edges of the exhaust port is projected at the circumferentially mid portion towards the opposin... | 03/21/1995 |
| 5251580 | Crank chamber precompression type two-cycle internal combustion engine A number of embodiments of scavenging port configurations for two-cycle internal combustion engines wherein the a scavenge port is formed adjacent the exhaust port and is masked by a cylinder liner so as to avoid the escape of scavenging gases to the exha... | 10/12/1993 |
| 5107810 | Impingement combustion chamber of internal-combustion engine An impingement combustion chamber internal-combustion engine comprising mainly the piston, cylinder head and fuel injection. The exhaust side of a piston crown has a block-wall facing the spray direction of a fuel injection system. The top of the block-wa... | 04/28/1992 |
| 5040496 | Two-stroke internal combustion engine In known two-stroke internal combustion engines with piston-controlled intake passages for the fresh charge and one or more exhaust passages for the exhaust gases, the actual direction of flow will deviate from the theoretical flow direction defined by th... | 08/20/1991 |
| 4873946 | Two-cycle internal combustion engine Disclosed is a two-cycle internal combustion engine including a protruding edge portion formed in a section of a lower side surface of an intake port which is adjacent to a pre-compression chamber of a cylinder. This protruding edge portion serves to defl... | 10/17/1989 |
| 4474145 | Fuel supply system for internal combustion engine A two-cycle internal combustion engine having reed valves in the fuel/air supply system is provided with an element in the flow path of the fuel/air into the reed valves, which element is shaped and positioned to promote uniformity of flow of the fuel/air... | 10/02/1984 |
| 4373474 | Scavenging arrangement for a two-stroke internal combustion piston engine In a two-stroke internal combustion piston engine, a piston is reciprocally movable within an axially elongated cylinder. The piston has a bottom dead center position and in the region of this position, the cylinder has an exhaust opening and a number of ... | 02/15/1983 |
| 4337734 | Two-cycle engine In a two cycle internal combustion engine having a cylinder, a piston, and an exhaust port, the improvement comprising tapering the edge of the exhaust port farthest into the cylinder where it intersects the cylinder wall as an isosceles triangle.... | 07/06/1982 |
| 4312305 | Two-stroke cycle gasoline engine A two-stroke cycle gasoline engine including at least one two-stroke cycle uniflow scavenging power cylinder-piston assembly which has a scavenging port configuration which consists of first, second, and third scavenging port configurations which are succ... | 01/26/1982 |
| 4306522 | Transfer port duct for two-stroke engines A transfer duct construction for a two-stroke engine cylinder in which a transfer port in the cylinder wall has a side wall that is perpendicular to the parting line along which the cylinder is cast; a transfer port cover extends over the transfer port an... | 12/22/1981 |
| 4258669 | Two-stroke cycle gasoline engine A two-stroke cycle gasoline engine including at least one two-stroke cycle power cylinder - piston assembly incorporating uniflow scavenging and two horizontally opposed pistons, and a scavenging structure which gives zero or a relatively weak swirl to th... | 03/31/1981 |
| 4248184 | Two-cycle diesel internal combustion engine An improved two-cycle Diesel internal combustion engine is provided, whereby the intake and exhaust port passages are modified to provide greater circulation of the combustible fluids and air during the intake and exhaust cycles of the Diesel engine, resp... | 02/03/1981 |
| 4088098 | Cross-scavenged, two-cycle internal combustion engine Disclosed herein is a two-cycle, internal combustion engine including a piston mounted for reciprocative movement inside a cylinder and having a top and an inlet face portion which periodically covers and uncovers an intake port during reciprocative movem... | 05/09/1978 |
